Fantaghirò is preparing for her duel to the death with Romualdo, unaware that he is the one with whom she is in love.The Black Witch, fearing that Fantaghiro and Romualdo will discover their true identities and that love will join them together forever, wants to make sure they will never realise that they are destined for each other. Her spell creates a double of Fantaghiro who then lures Romualdo to the Bottomless Swamp to die there. The White Fairy warns Romualdo of the danger waiting for him when, in the duel, he faces the Scarlet Knight, whose identity is unknown... while the Black Witch plots to sabotage their duel so that the two will never realise that they are destined for each other. The White Fairy fights back with her own plot to protect the would-be lovers.